Window construction



ELMER E. KILMER, OF CLEVELAND, OHIO.

WINDOW CONSTRUCTION.

Specification of Letters Patent.

Patented May 2?, 1919.

Application filed July 25, 1914, Serial No. 853,063. Renewed October 23,1918. Serial No. 259,459.

To all whom it may concern:

Be it known that I, ELMER E. KILMER, a citizen of the United States, anda resident of Cleveland, county of Cuyahoga, and State of Ohio, haveinvented a new and useful Improvement in Window Construction, of whichthe following is a specification, the principle of the invention beingherein explained and the best mode in which I have contemplated applyingthat principle, so as to distinguish it from other inventions.

The present improvements relate to window construction in general, andin particular to a window of the type which is now finding such generalfavor with the public, and which comprises means which permit the sashto be swung inwardly into the room about an axis disposed at some pointin the lower portion of the sash, this movement permitting a welldistributed entrance of air into the room for purposes of ventilation,and also permitting the sash to be swung into a horizontal position whendesired for the purpose of cleaning.

In such types of window construction the pivotal axis about which thewindow is swung includes usually a small block or plate which is free toswing only when the window is in its lowermost position, and if thewindow is swung to any great extent when raised this action causes abreakage in some part of the pivotal means. It is to prevent suchaccidents that I have designed the present invention. To theaccomplishment of the foregoing and related ends, said invention, then,consists of the means hereinafter fully described and particularlypointed out in the claims.

The annexed drawing and the following description set forth in detailcertain mechanism embodying the invention, such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used.

In said annexed drawing Figure 1 is a vertical section through a windowcasing and sash showing the window when in slightly raised position, andillustrating certain of the means which permit the inward swinging ofthe window; Fig. 2 is a similar section but showing the sash when swungthrough a slight angle and when not in its lowermost position; Fig. 3 isa transverse horizontal section on the line 33, Fig. 2; and Fig. 4: is aview in perspective of one improved form of catch which comprises a partof the means constituting the present invention.

In Fig. 1 there is shown a window casing 1 in which there are slidablymounted an upper sash 2 and a lower sash 3. It is possible to swing thelower sash 3 into the room by reason of the stops 4 which take the placeof the usual fixed weather-strips and which are pivotally attached tothe sides 5 of the window casing by means of hinges 6. It is consideredunnecessary to show the specific means which permit the lower sash to beswung inwardly, as there are numerous constructions which will permit ofthis operation, and it is only necessary to state that such means arepositioned in the lower part of the window and thus provide a pivotalaxis for the lower sash adjacent to the lower part of the window casing.It should furthermore be stated that the lower sash 3 can only properlybe swung inward without injury to the fixture when said sash is in itslowermost position. As illustrating one such type of swinging window,reference may be had to U. S. Patent 984,990, issued to W. H. l/Vorstand myself, although it will be distinctly understood that I do notlimit the use of the pres ent improvements to windows equipped with thespecific means shown in said patent.

In Fig. 1 there is shown in the side 5 of the window casing a stop orcatch comprising a disk 7 which is suitably attached to the casing andwhich is provided with a pivoted catch 8, such catch being normallyprojected into the space through which the sash 3 is swung inward by acoil spring 9. This catch 8 prevents the lower sash from falling inwardexcept when the catch is depressed by the operator, but does not preventthe sash from being swung inward when the same is in a raised position,nor does it in any way give notive to the operator that the sash has notbeen moved into its proper or lowermost position for swingmg. g

To secure this much desired result I provide therefor an invertedL-shaped groove in the side of the lower sash 3. Such groove consists ofa vertical portion 10 connecting at its upper end with a horizontalportion 11 leading to the outer side of the sash. The pivoted catch 8cooperates with this groove to prevent the sash from being swung inwardmore than a few degrees except when the sash has been moved into itslowest position. The operation of these means to secure this end will bereadily seen. 7 As the sash is moved inward after depressing the catch 8the latter permits the sa'shto slide 1 along the outer face 12 of thecatch until groove is opposite to the portionlO ofthe this part of thecatch, moved outwardly by gaging in the groove and preventing furtherswinging of the window in either direction. The operator is thusapprised that something is wrong by the refusal of the sash to befurther moved inward, and will readily comprehend that the sash has notbeen moved into its lowest position. The operator can then slide thesash downward until its lowermost limit has been reached, which willbring the horizontal portion 11 of the groove in line with the catch 8thus permitting the window to be swung inward.

The simplicity andeffectiveness of this means of making this type ofwindow construction fool-proof will be readily apparent from theforegoing description, and will when the latter is be recognized bythose skilled in the art andv conversant with this general type ofwindow construction as being an important step 1n rendering this type ofconstruction generallypopular and serviceable. In the past it has beenfound almost impossible to teach the users to always make sure that thewindow its lowest position behas been moved into fore swlnglng, and theresult has been that of cases the fixtures in a very large number havebeen broken and the. users have been disgusted with the operation of thewindow fixtures, although thesame are, when properly used, aconsiderable advance over the former type of merely slidingconstruction, since they afford better ventilation and a safer and moreconvenient mode of cleaning the windows.

Attention is called to the particular form of catch which I haveprovided in this construction. It is impractical to construct thesecatches of large size, and the result has been that a cheap and smallcatch has had to be used. Some means must be provided for normallymaintaining the catch in the position shown in Figs. 3 and 4, and thismeans has consisted of the coil spring 9 which is bent around the pivotpin 15 of the catch 8, and is then carried along parallel to the face 16of the catch, and has its outer end 17 bent across the other face of thecatch. A certain difiiculty has been experi- Copies of this patent maybe obtained for the spring 9 thus eneled off the upper face of the catch8 away from the corner at which the spring is bent over the same, andhave also bent this pordown parallel to the bev tion of the spring eledpart ofthe catch, which construction eliminates thediiiiculty which hasbeen described. V 1

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the'means stated by any of the followingclaims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as myinvention 1. In a window construction, the combination of a casing; asash sli'dably mounted therein and adapted to beswu'ng inward about itslower end; a catch resiliently mounted in said casing and adapted topre-- vent the swinging of said sash beyond a certain point untilmanually released; and said sash being provided with a groove adaptedto'cooperatewithsaid catch to pro vent the swinging of said sash beyonda certain point except whensaid sashhas first been moved into 1t'slowest position.

2. In a window construction, thje'c'ombination of a casing; a sashslidably mounted therein and adapted to be swung inward about its lowerend; a catclrresilie'ntly mounted in said casing andadapted to pre ventthe swinging of said sash beyond a certain point until manna L-grooveadapted to receive and cooperate with s'aidcatch to prevent the swingingof five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

ly released; and. said sash being provided with an inverted

